2131421242 has 16 divisors (see below), whose sum is σ = 3254398560. Its totient is φ = 1046770672.

The previous prime is 2131421239. The next prime is 2131421261. The reversal of 2131421242 is 2421241312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392 + ... + 65827.

It is an arithmetic number, because the mean of its divisors is an integer number (203399910).

Almost surely, 2^2131421242 is an apocalyptic number.

2131421242 is a deficient number, since it is larger than the sum of its proper divisors (1122977318).

2131421242 is a wasteful number, since it uses less digits than its factorization.

2131421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74477.

The product of its digits is 768, while the sum is 22.

The square root of 2131421242 is about 46167.3178991373. The cubic root of 2131421242 is about 1286.9344595347.

Adding to 2131421242 its reverse (2421241312), we get a palindrome (4552662554).

The spelling of 2131421242 in words is "two billion, one hundred thirty-one million, four hundred twenty-one thousand, two hundred forty-two".